[SmokeWagon]

OK, so, with the help of a new friend here in Cali...thanks Carl if your watching this we took a few high speed runs up and down the freeway with his new AE software loaded in his laptop. BTW....that AE is relly slick, too bad it costs an arm and a leg. Anyway, as told to me by Dave @ Swamps, I set my DP tune to my hottest tune (120 hp), cruised up to 60mph and then rolled in the throttle hard without making it downshift untill I hit 90mph. Made around 7-8 passes. Seemed like it was a consistant 2200-2500psi but would definately spike near 2800-3000psi as I let off. My buddy set the parameters to coincide with rpm and pedal position. I never really matted the go pedal because it would instantly make it down shift so I rolled on it hard and tried to keep it down until it felt like it wanted to downshift.

Why all this....well, Dave @ Swamps advised me to check my hpop before I made any decisions so I knew where I stood pump wise. I've been on here for a little while trying to decide if a Gen3 or stg 1's would be a better upgrade for towing. Hopefully the graphs will post and you all can disect them any which way you want. I'm interested to know what you guys think about the condition of my hpop and the direct you think I should taske based on this info.. Vehicle is a 2001 7.3.

Here we go....

Click on this link and the tabs at the bottom for the entire speadsheet: http://teacherweb.com/CA/CanyonCrest/Williams/071027AlinWilliamsICPTest.xls

 

[cowboy_dan]

Without absolutely having the pedal to the floor, you won't call for max oil. Until you call for max oil, it's hard to judge pump condition without a pressure & flow readings to compare to a chart.
The faster you are going when you hammer down, the less likely it will be to downshift. IIRC, my BTS chip on race won't downshift if I'm over about 76mph or somewhere in that area.
A good test would be to hit the drag strip and make a pass with the AE logging. A good SD truck should be in the 90-95mph range. My stupid, slow, OBS with really bad HPOP is about 80mph.

 

[Tom S]

Try this roll into the power on decent grade and watch ICP, IPR and RPM only and map out those results. Look at how the IPR reacts in accordance to the IPR.

Tom

 

[SmokeWagon]

hmmmm, rats... I thought based on PSI readings I posted I could get a simple thumbs up or thumbs down with regard to decent or sub-par psi pressure. Guess it's more complicated that that. I'm not digging too much deeper, I'll figure out if a pump or injectors suits me better.

thanks

 

[RockinJW]

A good SD truck should be in the 90-95mph range. My stupid, slow, OBS with really bad HPOP is about 80mph.

My truck was barely in that mph range with 450hp to the wheels. Your basic Superduty with stock injectors, intake, exhaust, chip would be closer to 80-85mph I would imagine.

 

[Charles]

Testing a hpop is really a simple deal, only takes about 30 seconds total.

Go find a nice piece of desolate road that you can have your way with. Then datalog IPR duty cycle % and ICP at the same time.

Take off at W(ass)OT until you run out of road, you have hit your max speed or the icp has totally settled in.

Then all you've got to do is watch the IPR duty cycle vs pressure and the story is plain as day.

FWIW, just about any program is going to call for at least 2800psi, so if you are around 2400 psi, you're about average, 2200 or so and you're below average, and anything less than 2000psi is piss-poor.

Good Luck.

 

[PowerstrokeJunkie]

I had "super-piss-poor 1700psi on my stock pump with 140 setting, now with two pumps i can hold 3850psi. The duty cycle was maxed out on that single pump too, now i bet it's not more than 30-40%. I've yet to log it but i should do it.

 

[Haul_n_horses2]

Testing a hpop is really a simple deal, only takes about 30 seconds total.

Go find a nice piece of desolate road that you can have your way with. Then datalog IPR duty cycle % and ICP at the same time.

Take off at W(ass)OT until you run out of road, you have hit your max speed or the icp has totally settled in.

Then all you've got to do is watch the IPR duty cycle vs pressure and the story is plain as day.

FWIW, just about any program is going to call for at least 2800psi, so if you are around 2400 psi, you're about average, 2200 or so and you're below average, and anything less than 2000psi is piss-poor.

Good Luck.

I found a nice uphill grade on the Interstate and while towing a 12K trailer (empty) I got on it from 50 mph at the bottom to 80 mph at the top. 2800 psi at 48% IPR duty cycle. This was the pump that a few months later started leaking from the fitting beneath the pump and as it was the lower pump on my BTS Dual HPOP, both had to be pulled. (sigh).

 

[TerminatorEngineering]

I had "super-piss-poor 1700psi on my stock pump with 140 setting, now with two pumps i can hold 3850psi. The duty cycle was maxed out on that single pump too, now i bet it's not more than 30-40%. I've yet to log it but i should do it.

Kris, 3850? OMG, that's too high!oke:

FWIW, just about any program is going to call for at least 2800psi, so if you are around 2400 psi, you're about average, 2200 or so and you're below average, and anything less than 2000psi is piss-poor.

See, and I think 2800 psi is piss poor!

 

[Charles]

My dyno says your a fool for running pressures like that. My destroyed fuel plates agree. Oh, and the flowbench also says the same.

Not me.....just those things.




BTW, Jody said it was all a big conspiracy the other day when I was over there.....

ostwhore2:

Messin with Yoey

 

[TerminatorEngineering]

LOL, I know Charles! One thing I'll give you: You have a great sense of humor!

 

[Charles]